Adding-machine.



APP

' E. E. PATTEN.

DDING MACHINE.

ION FILEDMAR. I2. 1914.

Patented Sep E. E. PATTEN.

ADDING MACHINE.

APPLlCATlON FILED MAR. 12. 1914. 1,158,820. v PatentedSept. 14, 1915.

' A 9 SHEETSSHEET 2.

E. E. PATTEN.

ADDING MACHINE.

APPLICATION FILED MAR. 12. 1914.

Patented Sept. 14, 19 15.

9 SHEETS-SHEET 3.

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E. E. PATTEN.

ADDING MACHINE.

APPLICATION FILED MAR. 12. m4.

E. E. PATTEN.

ADDING MACHINE.

APPLICATION FILED MAR. I2. I9I4.

PatentedSept. 14, 1915.

9 SHEETSSHEET 5.

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ADDING MACHINE.

APPLICATION FILED MAR. 12. 1914.

Patented Sept. 14, 1915.

9 SHEETS-SHEET 6.

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ADDING MACHINE.

APPLICATION FILED MAR. 12. 1914.

Patented Sept. 14, 1915.

9 SHEETS-SHEET 7.

E. E. PATTEN.

ADDING MACHINE.

APPLICATION FILED MAR. 12. 1914.

Patented Sept. 14, 1915.

9 SHEETS-SHEE'I 8.

E. E. PATTEN.

ADDING MACHINE.

APPLlCATlON FILED MAR. 12. 1914.

Patented Sept. 14, 1915.

9 SHEETS-SHEET 9.

UNITED STATES PATENT. OFFICE.

ELMER E. PATTEN, OF ST. LOUIS, MISSOURI, ASSIGNOR T LEO RASSIEUR, JR., TRUSTEE.

ADDING-MACHINE.

Specification of Letters Patent.

Patented Sept. 14, 1915..

Application filed March 12, 1914. Serial No. 824,102.

To all whom it may concern Be it known that I, ELMER E. PATTEN, a citizen of the United States, residing at the city of St. Louis, State of Missouri, have invented a certain new and useful Improvement in Adding-Machines, of which the following is a full,clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a top view of the machine with ribbon and paper handling mechanism removed. Fig. 2 is a top view with everything above the stops removed. Fig. 3 is a section showing the carriage stepped over in front of the accumulators. Fig. 3 is adetail illustrating the key lever locking mechanism. Fig. 4 is a section on line H of Fig. 1. Fig. 4 is a detail showing a back view of the carriage denominational stops. Fig. 5 is a view of the left hand side of the machine taken on the line 5-5 of Fig. 7. Fig. 5" is a detail fragmentary plan of the error key lever. Fig. 5 is a detail showing apartial top view of the register rock plate.

Fig. 6 is a view of the right hand side of the machine taken on line 6-6 of Fig. 7. Fig. 6 is a front elevation of the total key. Fig. 7 is a rear elevation of the machine showing the escapement mechanism. Fig. 8 is a top view showing the ribbon and paper handling mechanism. Fig. 8 is a detail plan view of the carriage shifting mechanism. Fig. 8 is a detail showing the side view of ribbon feeding mechanism. Fig. 9 is a detail illustrating the error key and connections.

My invention relates to an item listing and adding machine of the ten-key type in which the items are set up in segments carried on a movable carriage, the carriage being stepped leftwardly as each digit is inserted, into position for the segments to engage the-accumulators when the handle is pulled. The segments of the movable carriage are controlled in the setting-up opera tion by stationary stops operated by the keys, a stop corresponding to the numerical value of the key depressed being raised into position to limit the movement of the segment in which the digit is to be inserted. The segments carry printing type which are moved into printing position by the movemechanism,

an improved setting mechanism, an improved denominational stop mechanism for the item carriage, an improved printing and improved interlocking mechanisms for the various operating keys and actuating shaft of the machine.

The principal object of my invention is to simplify the construction of such machines by providing a mechanism containing comparatively few parts, nearly all of which may be stamped out of sheet metal.

A further object of my invention is to decrease the amount of metal in movement of the various operations, and to provide a machine in which all of the manipulative operations are light and rapid.

A further object of my invention is to provide a practical and efficient adding and listing machine of small size and weight.

These various objects are attained by a novel and improved construction and arrangement of parts as hereinafter set forth.

The segments and segmentcawz'aga-Referring to Fig. 1, 1 represents the right hand side frame, and 1 the left hand side frame. 2 are track bars mounted therein. 4 are the side frames of the segment carriage which are mounted on the track bars by rollers 5.

On a shaft 6 mounted in the carriage side .numbers on dial 9 relative to the sight opening S and the types 1O relative to the printing line. The carriage is shown in its normal or starting position in Fig. 1, in which position it is at the right of the register section R. A lock bar 11 is secured to the side frame 1 and engages between two of the teeth 8 on the segments to hold the segments in zero position. Pivoted in the frame is a movable lock bar 12 which is disposed over the register section and which engages between two of the teeth of a segment to hold the segment in its set position. Between the left hand end of lock bar 11 and the right hand end of lockbar 12, there is a space in which the segment is not engaged by either. When the segment is in this space, it is held at zero position by the intermediate stop 14 which is carried on a lever 15 pivoted at 16 and universally operable from all of the number keys, except the zero key, by a universal bar 17 This intermediate stop 14 is the zero stop, and in passing from the control of lock bar 11 into the control of stop 14, the segments will be retained in unset orzero position. Extending rearward of zero stop 14 are the digit stops 18 each under control of a key. When in normal position, these stops 18 lie below the path of movement of the depending lugs 19 of the segments, but depression of a key raises a stop 18 so that it will be in the path of the lug 19 of the segment which is being set, and stop the segment when it has rotated to the distance indicative of the digit to be set up. It will be understood that as the number key is depressed to raise one of the stops 18, the intermediate stop 14 is withdrawn because of its universal bar connection with the key levers, and hence the segment upon escaping from the control of zero stop 14 will be rotated to the extent permitted by the number stop raised. This positioning of number stop 18, withdrawal of intermediate stop 14, and revolution of the segment so that the segment passes from control of zero stop 14 into engagement with a number stop, takes place upon the downward movement of a key. Upon the upward movement of the key, the set segment is shifted from the setting zone into engagement with looking bar 12 and the next segment shifted from control of locking bar 11 into control of zero stop 14. Thus it will be seen that in the setting operation a segment is shifted out of engagement with lock bar 11, into engagement with zero stop 14, then into engagement with the selected key operated stop, and then into engagement with locking bar 12, where it lies in front of an accumulator wheel. The setting of a digit in the next segment steps the first segment from in front of the units accumulator wheel to in front of the tens accumulator wheel and so on. This is the setting operation, and auxiliary to it are the number key full stroke, the escapement and the segment throwing operations.

T he escapement-The escapement will best be understood by-reference to Figs. 6 and 7 In the side frames 4 of the carriage is mounted the'escapement rack 20. Pivoted to side frame 1 at 21 is a vibrating lever 22 on which are pivoted pallets 24 and 25. The

convergent movement of pallets 24 and 25 is limited by pins 26 and induced by spring 27. The free end of vibrating lever 22 is drawn downwardly by a spring 29. Vibrating lever 22 is oscillated on its pivot 21 by a link 30 which is operated from the universal bar 31. (See Figs. 5, 6 and 7.) Pallet 24 is a half step pallet and pallet 25 is a full step pallet. \Vhen a number key is depressed, vibrating lever 22 is raised so that half step pallet 24 engages one of the teeth of escapement rack 20. This permits the carriage to escape a half step, in which movement it will be remembered the segment held by Zero stop 14 is rotated to set position against a number stop. Upon return of the depressed key, vibrating lever 22 returns downwardly withdrawing pallet 24 and inter-posing pallet 25. This permits the carriage to escape over the second half of the step, during which movement the segment in the setting zone passes into engagement with locking bar 12 and the next segment into engagement with zero stop 14. The carriage is moved leftward by a spring pressed lever 32 pivoted at 34 to the carriage side frame 4. (See Fig. 8%)

Segment throwing viwchanism.-The segment throwing mechanism is to insure that the segment being set is given its full movement into engagement with the raised stop 18. It is operated in conjunction with the escapement mechanism and comprises the throwing lever 35 which is pinned to a sleeve 36 shifted longitudinally on shaft 37 against the influence of spring 38, Fig. 7. The lower edge of throwing lever 35 lies down over the stops 18 so that when a stop is raised, it throws throwing lever 35 upwardly. Throwing lever 35 has a portion 35 which is adapted to cooperate with rollers 36 carried on the segments 7 so that as lever 35 is raised it positively rotates the segment being set, and assists the spring 7 of said segment in rotating the segment to the full extent permitted by the set stop. As the segment is moving leftward while it is rotating, it is necessary to move throwing lever. 35 left ward with it and this is accomplished by a cam lever 39 (see Fig. 6) which cooperates with a cam 40 carried on the sleeve 36. Cam lever 39 is operated from lever 31 of universal bar 31 by means of a tappet 41 and cooperates with cam 40 to shift sleeve 36 leftward against the influence of spring 38 (rightward as shown in Fig. 7) thus carrying throwing lever 35 along with the segment which is being set.

Accmn uZa tin .It will be understood that as the segments are set and stepped oy'er a deferred carrying mechanism comprised of sectors 45, retaining pawls 46, and tripping pawls 47. Tripping pawls 47 also trip denominational carriage stops 48 to throw 'them forwardout of the path of carriage stop 49. The denominational carriage stops 48 are pivoted on a shaft 48 and are spaced apart from one another at distances corresponding to the spacing of the accumulator wheels. mal position by gravity, but as stated, may be tripped or swung out of normal position by tripping pawls. 47. As will be seen by reference to Fig. 4, each stop 48 has a laterally projecting finger 48 engaging the stop of the neXt lower denominational order.

Consequently, no stop of a lower denomina tional order can be in normal position when a stop of a higher denominational order is in tripped positionfas the fingers 48 form an interlocking arrangement whereby the position of stops of lower denominational orders are under the control ofstops of" higher denominational orders. The accumulators are rocked into mesh with the set segments by operation of operating handle 50 which rotates drive shaft 60 carrying driving cam 61. Loosely mounted on shaft60 is a bell crank 51 carrying a dog 5l which is adapted to engage a slot 61 in cam 61 so that bell crank 51 will be swung with .cam 61. with asliding bar 52 mounted on side frame '1. Sliding bar 52 has at its forward end a cam piece 54 which co5perates with a pin 55 projecting from register frame 44. Swinging bell crank '51 on the forward ing bar 52 rearwardly, and cam piece 54 acting on pin 55 rocks the registerframe over so that the totalizers mesh with the segments. their normal position on shaft 6, and the amounts for which they were positioned inserted into the accumulator after the regis-f ter frame has rocked into engagement with the segments. This .return of the segments is accomplishedby a bar 57 carrying rollers 58 which engage edges 'i' of the segments. Bar 57 is carried by cam' 61-.and a second cam plate 62 carried by shaft 60. In the return to unset position, the teeth of the segments escape upwardly across locldng bar 12. 1 a 5 As best shown inFig. 4,. each totalizer wheel has a conjoined cam 53 with which cooperates a tripping pawl 47, the nose of which lies in the cam notch when the total- Upon rotation of the totalizer from 9 to zero, the maXi--.

izer is in Zero position.

mum thrust of its cam causes its tripping pawl 47 to trip its retaining pawl 46, permitting the carrying segment 45 of the next higher order to disengage from the shoulder of the retaining pawl. Further downward movement of the. carrying segment is pre- They are maintained in their nor- Bell crank 51 has pivotal connection The segments are restored to vented by the engagement of its rearward. end 45 against a bar 43 carried on a rock plate43. Later, during-the forward movement of the operating handle,'pin 55 falls ofi the rear end of cam piece 54,permitting the register frame to rock back with the accumulator wheels in engagement with the cartrying segments. Sliding plate-52 has a sec; ond cam piece 52 which coiiperates' with a pin'43 extending from 'rock plate 43. Soon after the engagement of pin55 by cam piece 54, this pin 43 willhave been engaged by the forward end of cam piece 52 have passed over hump .52, and thereafter, due to the engagement ofbar 43 with the ends 45 of the carrying segments, the carrying segments 45 will be held elevated until pin 43 slides off the forward end of cam piece 52 Thereupon, rocking plate 43 will rock downward under the influence of its spring, releasing such of the carrying segments 45 as have been tripped from their detaining pawls 46, and permit such tripped carrying segments 45 to move downward under the influence of their springs, thereby effecting the carrying into their accumulator wheels. This operation, of course, occurs subsequent to the time that pin 55 drops off the front end of cam piece 54, and therefore, while the accumulators are in engagement with the carrying segments. The carrying segments which have carried are restored early in the next operation of the handle after the totalizers have been swung away from the carrying segments and before the item segments are restored to normal position, when the little hump 52 on cam piece 52 engages leftwardly toward side plate'l v against the influence of spring 52. This will be understood by reference to Fig. 5

The carriage is returned rightward by a retracting lever 64 which swings lever 32 rightward. Lever 64 is swung from operating shaft 60 through a lever 65, carrying a frolle'r 65 which coiiperateswith the lower The lever 65 is swung on the rearward movement-of the handle by a end of lever 64.

ta'ppet 66 on cam plate 62.

PMntz'ng.Pivotedat 80 in'the side frame is the printing hammer .81 having a strikstriking bar is limited by a lug 85 on the This lot

ment of lug 61 of operating cam side fr'ame. Slidably mounted on side frame 1 is a vertically sliding bar 86 whiEh upon the first part of the forward movement of the handle is carried upward by the engage- 61 with the depending arm of a bell crank 86". Sliding bar 86 has a rearward extension 86 on which is pivoted a tappet 87 under the J influence of compression spring 88. Tappet 87 engages beneath a lug 89 on the rear end of the pivot arm 81 of the printing hammer, so-that as sliding bar 86 is carried upward,

' said rear arm Will be swung upward and wardly against the ribbon, printing the numbers which are positioned on the printing line. Segments which have not been set do not have their type carriers actuated for the reason that the right hand half of striking bar 82 is cut down, as best illustrated in Fig. 4, so that only the type carriers of set segments are struck.

The error lcey.As heretofore explained, the shifting of the accumulator wheels into engagement .with the segments is accomplished by the swinging of bell crank lever 51': by operating cam 61 by virtue of detent 51. Incase an error in setting up is made, it is necessary to operate the handle in order to return the set segments to unset position. Therefore, means mustv be provided to disengage the operating cam 61 from the register frame so that such incorrect number willnot be added in the totalizers. This is accomplished by the error key 90, from the lever 91 of which is operated an auxiliary lever 93 provided at its rearward end with an upstanding finger92 which is adapted to cooperate withdog 51 to move the same out of the notch. in operating cam 61. Consequently, when the handle is pulled, the ac.-

' cumulator wheels will not be shifted into en- 121 is moved so that its rearend engages the lug 61 of operating cam 61, thereby locking the driving shaft and operating handle against movement. Upon the full stroke of error key 90, however, tappet 94 is cammed by rod 124 out from behind the transversely extending portion 121 of latch plate 121, which permits the latch plate 121 to return rearwardly under the influence of spring 126 and release operating cam 61.

Means is provided for holding the error key depressed and the accumulators out of mesh with the segments while the segments are being returned to unset position by operation of the handle. On the rear portion of the error key lever 91 is a transversely extending lug 91 which is designed to cooperate with a notch in the front of a detent lever 149 which is pivoted at 149 and pressed toward said lug 91 by spring 149*. Consequently, when the error key is depressed, the lug 91 will be lifted until it y will be engaged by the notch in said detent lever 149, and by this means detent 51 will be held out of engagement with plate 61 until the completion of the forward stroke of the handle which returns the segments to unset position. Atthe end of the forward stroke of the handle, the depending portion 61 of plate 61 will engage a laterally extending ear 149 on detent lever 149, and

swing said lever rearwardly to disengage lug 91. Printing of an item while the error key is depressed is prevented by the rear end 91 of the error key lever, which engages the laterally extending arm of bell crank 86 on the lower end of sliding bar 86, and rocking said bell crank on its pivot, swings its depending arm from over lug 61", so that sliding bar 86 will not be shifted upwardly to actuate the printing hammers when th handle is pulled.

The total 7cey.-Total key 100 (see Fig. 6)

is pivoted at 101 on side frame 1. Operation of total key 100 accomplishes four things. First, it lowers carriage stop 49 so that-it will engage the first denominational stop 48 which has not been swung out of its path by a tripping pawl 47. This is accomplished by the forward movement of releasing bar 106 carrying a shaft 107, which, operating in a slot 49 of carriage stop 49 cams said stop downwardly. Second, it releases the'segment carriage to permit its escape leftward into proper position in front of the accumulators. Third, it throws the accumulators into engagement with the segments and locking bar 12 out of engagement therewith. Fourth, it-locks the operating handle against movement until a full down stroke of the total key is accomplished. The second effect, that of releasing the carriage to allow its escapement, is accomplished through a plate 102 which is pinned to shaft 104 so as to swing with the rotation of said shaft. At the opposite end of shaft 104 end of full step pallet 25.

upon depression of total key 100, plate 102 I swings shaft 104 which slides releasing bar 106 forward and cams pallet out of engagement with escapement rack 80, thus permitting the segment carriage to escape over to the extent permitted by the denominational escapementstop 18 in the path of carriage stop 19. At the-side of plate 102 is plate 108 which is loosely mounted on shaft 104 and has a laterally projecting lug 108 lying in the path of an arm 102 of plate 102. By this means plate 108 is swung upwardly upon depression of total key 100. Plate '108 carries a pin 109 which operates in a cam slot 110 in a cam 111 which is pivoted at 101 and carries an arm 112 carrying a pin 114 connected to the register I rock frame. The swinging of plate 108 upardly, by virtue of the OP Ofpin 109 in cam slot 110, swings arm 112 and pin 114E forwardly, rocking the register frame 44: so that the accumulators thrown into mesh with the segments. At the end of the upward movement of plate 108, pin 109 comes to rest in the inner end of slot 110, and a latching lever 108 which is pivoted on side frame 1 and has a laterally projecting end 108, swings under the influence'of its spring 1,08 so that the laterally projecting end 108 engages under the end 108 of plate 108, locking it in its upward position and the register wheels in engagement with the segments. The interval between the time when plate 102 starts to move and the time when its end 102 engages lug 108*, gives time for the segment carriage to escape over in front of the accumulators before the register frame is locked-by the movement of plate 108 and cam 111. Total key 100 is held locked in its depressed position by latch plate 123 which engages a lug 123 on sliding plate 106 when said sliding plate is moved forward by rotation of shaft 104. The completion of the stroke of total key 100 moves a lug 106 on sliding bar 106 against movable lock bar 12 and pushes it out of engagement with the segment teeth so that the segments may be permitted to escape downwardly inmesh with the accumulator wheels to the extent of movementpermitted by the cams 59. Tt is obvious that this movement will be continued until the accumulator wheels are returned to zero, in which position, they are stopped by the engagement of tripping pawls a? with the cams. W hen the accumulators are thus returned to zero position, each sector will have moved downwardly to an extent corresponding to the number at which its accumulator wheel stood, andthe total will thus be made toappear through the sight opening, and the type levers will have been positioned with {he type to print the'total on the printing of the parts are restoredto normal position by the operation of the operating handle as follows: First-A pin 62? which is carried by plate 62 swung by the handle will engage the shoulder of latch lever 108 and throw the end 108 of said lever out from under the end 108? of plate 108, allowingplate 108 to fall under the influence of its spring 108 This movement of plate 108, due to the engagement of pin 109 in slot 110, will swing cam 111 and arm 112 so as to dis engage the accumulators from the segments. Almost simultaneously'with this operation, pin 103 on drive cam 61 will engage latch plate 123 and cam it upward to release sliding plate 106 which is returned rearwardly by spring 105 which is attached to a rearwardly extending arm of arm 105. Then rollers 58 will engage the segments andv during the remainder of the forward stroke of the handle return. them to unset position.

The member key full stroke me0ham'sm. The number keys are provided with any of the well known forms of mechanism whereby depressionof more than one key at a time is prevented. C ne well known form is illustrated in Fig. 3 the same comprising a'series of pivoted pallets 200 which are mounted on the comb plate 201. The sides of these pallets are adapted to contact with one another so that when one of the pallets is swung, the others of the series will also be swung to place a portion thereof in the path of the lrey levers. There is enough move ment between the pellets to permit the passage of a singlekey lever between two of them. This forces the other pallets together to prevent depression of any other key lever.

Universal bar 81 is losely mounted on shaft 104, and extends below all of the num- 1 her key levers, so that whenever a number key 1s depressed, the front end of the universal bar will be swung downwardly and 121, so that whenever a number key is de-- pressed, latch plate 121 will be moved so that its rearward extension will engage lug61 to prevent rotation of the power shaft until the depr ssed key has returned to normal position. Each number key is provided with a full stroke mechanism, best. t illustrated 1n Fig. 3, the same comprising a detent and a latching detent 14:1. The

lower ends of the number key shafts are pro- Y vided with notches 142 and are inset from "the point 144:. A detent 14 0 cooperates at one end with each key shaft, and at the other I end with the associated latching detent 141. The detent 140 is adapted to cooperate with the notches 142 to prevent return of the key is depressed to the extent that the point of has been started. However, when the key is depressed to the extent that the point 144 engages the cooperating end of the detent 140, saiddetent 140 will be swung unt1l the cooperating nose of latching detent 141 engages over its rearward end, thereby holding its forward end out of cooperation with l the key shaft, and permitting the return of the key under the influence of its spring 145. lVhen the'key is almost returned to normal position, the end of'a slot 146 in the shaft thereof-will engage a pin 147 upon an arm 'of the latching detent 141, swinging said latching detent out of coiiperation with detent140, so that the latter is dlsengaged and permitted to return into cooperation with the key shaft. By virtue of the cooperation of this full stroke mechanism with the locking mechanism comprising the parts .31", 121, 121*}, and 61, it is impossible to operate thepower shaft of the machine with any of the number keys in other than normal position.

Total key full'stroke and hcmdle locking me0kam'sm.'The full stroke mechanism for thetotal key 100 comprises the ratchet toothed portions 111 and the ratchet 113, which cooperates therewith to prevent return of the key -before a full stroke has been completed. The handle 50 .is locked between the time when a stroke of total key .100 is started and completed by the latch plate 121, whose rear end 120 is drawn over i "the lug 61 on plate 61: Latch plate 121 is operated from the total key by means of the tripping plate 103 which is pivoted on arm 105, and functions in the same fashion as L of total lkey 10O is started and arm 105 eration of the handle.

ddes plate '94. 'Tripping plate 103 has a shoulder, which engages'behind the laterally extending projection 121 on latch plate V121, and. a finger portion which engages over shaft 124. Consequently, when depression swung forwardly thereby, latch plate 121 will be shifted forward by tripping plate 103 toprojecting portion 120 over lug 61.

At the completion of the downward stroke of total key 100, however, tripping plate 103 will be cammed from behind the lateral projection 121 by virtue of the,camming action-of rod 124 on the finger of plate 103.

Thereupon latch plate-121 will be released to move' rearward under the influence of its spring 126, releasing plate 61 to permit op- In order to hold locking bar 12 out of segments are escaping downwardly to clear the accumulator wheels at the taking of a total, it is necessary to hold releasing bar en- 'gagement with the segment teeth whilevthe 106 in its forward position, in which position lug 106 is in engagement with looking bar 12. To this endis provided the latch 123 which is pivoted on side frame 1, and which is adapted to engage a lug 123*.on releasing bar 106 when said releasing bar is shifted forwardly. This holds releasing bar 106 in its forward position and total key 100 is depressed. When the operating handle is firstpulled the operation of the printing hammers will be accomplished by lug 61 actuating'sliding bar 86 as above described. Thereafter latch 123 [will be cammed up from behind lug 123 by roller V106 engages pin 150 and swings vibrat-' ing frame 150 forward, thereby positioning the red portion of. the bi-colored ribbon on the printing line.

Paper feeding meehdnism.The operation of the paper feeding mechanism will be understood from Figs. 3, 5 and 8. The paper roll iscarried on a support 160 and fed therefrom between feed roll 161 and platen 162. On the platen shaft is mounted a ratchet 164 which is'held by a detent 165 and actuated by a dog 166 carried on a swinging; plate 107. Swinging plate 167 is actuated by a lever 168 which is mounted on side frame 1 and which is swung by the printing hammer 81. \Vhenever lever 168 IS so swung it actuates plate 167 and feeds the paper. by rotating platen 102.

In Fig. 6* is illustrated a feature for in- .fluencing the operation of the total key 100 so as to insure the carriage stepping over completely in front of the proper totalizers before the lock bar 12 is operated to release the segments In the path of the lever of the total key 100 is interposed a stop 100 which causes the operation of the total key to. stop for an instant after it has been depressed sufliciently to release the carriage.

causes the key lever to slip 'leftwardly off of the stop 100 so that the stroke may be completed. The detent 100 insures the key lever coming into engagement with the stop 100, but permit'sdirect return of the key lever on the upward stroke. p

Ribbon, feeding mechanism.The' ribbon feeding mechanism is illustrated in Fig. 8 The left hand ribbon spool is provided with a ratchet wheel 204 with which cooperates a The'pressure upon the total key, however, 1

it rotates the ribbon spool and feeds the,

ribbon. I

From the foregoing, it is obvious that the various improvements which I claim as my invention provide a very compact and simple accumulating and listing machine having among other novel features a new and improved form of item carriers; a new and improved item setting mechanism; a new and improved denominational stop mecha nism for the differential item carriers; a new and improved full stroke mechanism for number keys; a new and improved mechanism for shifting various parts in taking a total; and a new and improved general arrangement of parts. i

While I have shown herein a single embodiment of my invention, it isevident that many changes can be made in the structure within the scope of the appended claims without departing from the/spirit thereof.

What llclaim is:

1. In a computing machine, the combination of a revoluble item segment mounted for denominational movement, key-operated stbps for positioning said segment to indicate a number, keys for operating said stops, and means operable by said keys for revolving said segment, said means being movable laterally in unison with the denominational movement of said segment for the purpose described.

tion'of item carriers mounted for denominational movement, locking bars for holding said item carriers in unset and positions,

number stops adapted to ccepera'te with each of said item carriers when it is intermediate said lock ng bars, keys for operating number stops to render them effective, and

an intermediate stop adaptedte limit movement of an item carrier": 1en it is intermediate said locking bars, said intermediate stop being operable from numeral keys.

' l, In a calculating machine, the combination of item carriers mounted for independent movement 1n one direction and simultaneous denominational movement in another,

direction, a locking bar for holding said item'carri'ers 1n unset position, a locking bar for holding said ltem carrlers in set position an intermediate stop effective upon said item carriers intermediate said locking bars, means for stepping said item carriers successively from the control of said first mentioned locking bar to the control of said intermediate stop, and from the control of said intermediate stop to the control of said second mentioned locking bar, means for releasing said item carriers from said intermediate stop, and number stops adapted to limit the movement of said item carriers when so released.

5. In a calculating machine, the combination of a denominationally movable carriage carrying item. carriers, means for stepping said carriage for denominational movement, denominationa-lly arranged accumulator wheels adapted to be actuated by said item carriers, a denominational stop under the control of each of'said accumulator wheels, and a stop mounted on said carriage and adaptedto coiiperate with said denominational stops to limit the denominational movement of said item carriers relative to said accumulator wheels.

tion of a laterally movable carriage carrying item carriers, means for positioning said i em carriers individually, denominationally arranged accumulator wheels adapted to be actuated by said item carriers, a denominational stop under the control of each item wheel, means for releasing said carriage to per its movement relative to said item wheels, and a stop operable by said means and adapted to cooperate with said denominational stops to limit the movement of said carriage. t

7. In a calculating machine, the combination of item carriers, a register frame carryted te render said cam plate ineffective upon said shifting means, a manually manipulative means adapted to operate said disengaging member and to render said cam plate ineffective upon said printing meshanism, a second manually manipulative means adapted to operate said disengaging member without rendering said cam plate ineffective upon said printing mechanism. I v

8. In a computing machine, the combination of a denominationally movable car-' riage, a plurality of item segments carried thereby, key-operated stops adapted for pcsitioning said segments in denominational sequence, keys for operating said stops, and means operable by said keys for revolving said segments; said means cooperating with said segments in denominationalsequence and being movable laterally in unison with the movement of the carriage.

9. In a calculating machine, the combination of a laterally movable carriage, item carriers carried thereby, a register adapted to cooperate with said ltem carriers, locking means for holdmg said item carriers in set positions, an escapement mechanism for said laterally movable carriage, a total key, and a releasing bar operable thereby;

said releasing bar being adapted upon opdicate numbers, a printing hammer adapted to cooperate with the type carriers of set segments, an operating handle, a swinging plate operable thereby, a sliding plate provided with means adapted to cooperate with said printing hammer and a movable member adapted to cooperate with said swinging plate, an error key) and means operable thereby for afiecting said movable member to render said swinging plate ineffective I upon said sliding bar.

11. In a calculating machine, the combination of an item carrier, a totalizer, a

means including an operating shaft adapted" to render said item carrier effective upon said totalizer, a slidable latch plate, a manually manipulative means, and means operable thereby for moving said latch plate to lock said operating shaft against rotation.

12. In a calculating machine, a denominationally movable carriage, item carriers carried thereby, accumulators with which said item carriers are adapted to cooperate, denominational stops operable by said accumulators, a stop carried by said carriage,

and means for moving said stop into the plane of said denominational stops.

13. In a calculator, the combination of a denominationally movable carriage, item carriers carried thereby, a plurality of accumulator wheels, a plurality of denominational stops adapted to limit the movement of 'said carriage, and means operable by "rotation of said accumulators for moving said stops out of operative position.

1a. In a calculator, the combination of a -denominationally movable carriage, item carriers carried thereby, accumulator wheels adapted to cooperate with said item carriers, a denominational stop associated with each of said accumulator wheels and adapted to limit the movement of said carriage, and

means operable by each of said accumulator wheels for operating its associated denomi-' national stop.

15 In a calculator, the combination of a laterally movable carriage carrying item pressed lever against the influence of its spring and means swung by said operating handle adapted to actuate said last mentioned lever.

16. In a calculator including an operating shaft, a means for locking said shaft against operation, said means including a latch to hold the shaftagainst rotation, a manually. manipulative means, an arm swung thereby, a tappet carried by said arm and plate adapted to engage an. arm of said shaft adapted to move said latch plate when said arm is swung in one direction, and a member engaging said tappet and adapted to cam the same'from engagement with said latch plate upon a predetermined movement'of said arm.

17. In a calculator including an operating shaft and number-setting devices, a means for locking said shaft during certain movements of said number-setting devices, said means including a latch plate adapted to engage an arm of said shaft to hold the shaft against movement, a swinging arm adapted to actuate said latch plate and universally operable from said number-setting devices,

and a full stroke mechanism adapted topreclude return of said number-setting devices until a full stroke thereof has been completed.

18. In a calculator including an operating shaft, item carriers, and a register, a means for rocking said register into cooperation with said item carriers, said means including a driving cam operable from the operating shaft, a sliding plate adapted to engage the register to IIIOXG the same into cooperation with the item carriers, a lever whereby said sliding plate is actuatedfrom' said driving cam, and adog whereby said lever is actuated from said driving cam, saiddog being disengageable from said driving cam whereby to render the latter ineffective upon said sliding plate.

i 19,. In a calculator, the combination of laterall movable item carriers, manually manipu ative number-setting devices adapted' to affect said item carriers, a laterally movable throwing mechanism adapted to move said item carriers to set positions, a bar universally operable from said numbersetting devices, and means operated by said bar for movingsaid throwing mechanism in unison with the lateral movement of the item carriers.

. nism laterally with said item carriers.

- said first mentioned detent upon the com- 21. In a calculator including manually manipulative keys, a full stroke mechanism for each of said keys, the same comprising a key shaft provided with notches, a detent having its nose adapted to cooperate with the notches in said shank to prevent return of the key, a latching detent adapted to cooperate with the tail of said first mentioned detent to hold its nose out of cooperation with said notches upon the completion of the stroke of the key, and means for moving said latching detent out of cooperationiwith plete return of the key.

22. In a calculator, the combination of laterally movable item carriers, a locking bar adaptedto hold said item carriers in unset position, means for moving said item carriers to selective set positions, a locking bar adapted to hold said item carriers in said set positions, a register adapted to cooperate with said item carriers, and means adapted to return said item carriers to unset position; said last mentioned locking bar being adapted'to permit the escape of said item carriers during their return movement to unset position. 7

23. In a calculator in combination with amount-setting devices, a plurality of type carriers carrying printing type, said type carriers being mounted for collective lateral movement and for independent orbital and pivotal movements, means for imparting qlateral and orbital movements to said type carriers whereby to selectivelv position-the type carried by them, and means for imparting pivotal movement to selected type carriers whereby to print from the type so positioned; said type carriers being movable into cooperative relationship with said last mentioned means by their lateral movement.

24. In a calculator including accumulator wheels, denominational stops operable from said accumulator wheels, a denominationally movable carriage, type carriers carried thereby,- means for imparting denominational movement to saidcarriage, means on said carriage adapted to cooperate with said denominational stops to limit the denominational movement of said carriage, and means for printing from said type carriers numbers corresponding to the amounts set up in said accumulator wheels.

25. In a calculator in combination, a laterallymovable carriage, a plurality of item carriers carried thereby, means for positioning said item carriers in positions signifi cant of numbers, a plurality of type carriers carried by said carriage and mounted for longitudinal movement thereon, one of said type carriers being associated with each of said item carriers, and means for imparting movement to said type carriers whereby to printtherefrom numbers indicative of the significant positions of their associated item carriers; said type carriers being movable into cooperative relationship with said last mentioned means by lateral movement of the carriage.

26. In a calculating machine the combina- 1 tion of an accumulator having a plurality of denominationally arranged accumulator wheels, an item segment provided with means for actuating any of said accumulator wheels and mounted for denominational movement relative thereto, means for moving said segment to positions significant of digital numbers, a type carrier mounted on said segment and having printing movement independently of the movements of said segment, number type carried bv said type carrier, an actuator for said type carrier adapted to actuate the same to print from the type thereon, said actuator being so correlated with said accumulator and said type carrier as to be effective upon the latter only when said segment has been positioned for cooperation with one of said accumulator wheelsby. denominational movement of said segment.

7 27. In a calculating machine including accumulator wheels, denominational stops operable from said accumulator wheels, a denominational carriage, and means on said carriage adapted to cooperate with said denominational stops. to limit the denominational movement of said carriage.

28. In a calculating machine including accumulator wheels, denominational stops operable from said accumulator wheels, a denominationally movable carriage, denominationally arranged series of type carried on said carriage, means for printing from said type, and means on said carriage adapted to cooperate with said denominational stops to limit the denominational movement of said carriage.-

29. In a calculating machine including accumulator .whe'els, denominational stops operable from said accumulator wheels, a denominationally movable carriage, denominationally arranged indicators mounted thereon, and means on said carriage adapted to cooperate with said denominational stops to limit the denominational movement of nationally arranged accumulator wheels,"

a plurality ofdenominationally movable item carriersadapted to cooperate with said accumulator Wheels to set amounts therein, means for positiomn sald item carriers under control of sai accumulator Wheels to indicate a total contained in said accumulator, and means for operating said item carriers to print said total.

31. In a listing and adding machine, the

combination of an accumulator comprising a plurality of accumulator Wheels, a denominationally movable number carrier includ ing a plurality of individually movable number segments arranged "denominationally, means for operating said number carrier to set numbers in said accumulator,' -pr1nt1ng type earned on said number segments, means for bringing said number segments While inunset positions into cooperative engagement with accumulator Wheels, meansi'or releasing said number segments While so engaged to permit their clearing this 9th day of March, 1914.

ELMER E. PATTEN.

WVitnesses i y I M. P. SMITH, MaA. HANDEL. 

